QN8027规格书

QN8027HighPerformanceDigitalFMTransmitterforPortableDevicesRev0.23(03/09)Copyright©2009byQuinticCorporationPage1ConfidentialInformationcontainedhereiniscoveredunderNon-DisclosureAgreement(NDA).AdvanceTechnicalInformation.Thisisaproductunderdevelopment.Characteristicsandspecificationsaresubjecttochangewithoutnotice.________GeneralDescription___________________KeyFeatures__________TheQN8027isahighperformance,lowpower,full-featuredsingle-chipstereoFMtransmitterdesignedforportableaudio/videoplayers,automotiveaccessories,cellphones,andGPSpersonalnavigationdevices.TheQN8027coversfrequenciesfrom76MHzto108MHzin50/100/200kHzstepsizesforworldwideFMbandsupport.TheQN8027alsosupportsRDS/RBDSdatatransmit.TheQN8027integratesacompletetransmitterfunction,fromstereoaudioinputtoRFantennaport,forworldwideFMbandpersonalareabroadcasting.Itincludesvariableinputgainprogramming,selectablepre-emphasis,precisionlow-spurMPXstereoencodingandpilottonegeneration,low-noisePLL-basedmodulation,andanon-chippoweramplifierwithvariableoutputlevelandRFband-passfilteringtoensureoptimumtransmitspectrumpurity.Anintegratedcrystaloscillatorandon-chipdigitalcalibrationcircuitseliminateexternaltuningcomponentsandenabletuning-freemanufacturing.Supportfor12/24MHzreferenceclocksallowsthechiptousereadilyavailablesystemclocks.Integratedsaturationdetectionandaprogrammableaudiointerfaceeliminatedistortion,optimizeaudiofidelity,andsupportawiderangeofinputaudiolevels.AlowpowerIDLEmodeextendsbatterylife.AnintegratedLDOenablesdirectconnectiontothebatteryandprovideshighPSRRforsuperiornoisesuppression,inparticularTDMAnoisefromGSM/GPRSphones.TheQN8027’ssmallfootprint,highintegrationwithminimumexternalcomponentcount,andsupportfor12/24MHzclockfrequenciesmakeiteasytointegrateintoavarietyofsmallform-factorlow-powerportableapplications.Integratedlow-phasenoisedigitalsynthesizersandextensiveon-chipautocalibrationensuresrobustconsistentperformanceovertemperatureandprocessvariations.AnintegratedvoltageregulatorenablesdirectconnectiontoabatteryandprovideshighPSRRforsuperiornoisesuppression.Alow-powerIDLEmodeextendsbatterylife.ESDprotectionisonallpins.TheQN8027isfabricatedinhighlyreliableCMOStechnology.•WorldwideFMBandTransmit•76MHzto108MHzfullbandtuningin50/100/200kHzstepsizes•50/75μspre-emphasis•EaseofIntegration•Smallfootprint,3x3x0.95mmMSOP10•Only2externalpassivecomponentsrequired•Adaptiveantennatuning•LowcellularandGPSbandspurs•HighImmunitytoTDMA(GSM/GPRS)burstnoise•Multiplecrystalfrequenciessupported•I2Cinterface•VeryLowPowerConsumption•6.5mAofFCCoutputlevel•Integratedvoltageregulator,directconnecttobattery•PowersavingIDLEmode•HighPerformanceFMTransmitter(FMT)•63dBStereoSNR,0.05%THD•Maximum121dBuVpRFoutputlevelwith42dBadjustablerange•AutomaticInputAudioSensing•RFpowerautomaticallyturnedoffifnoinputaudiosignalfor60s•RDS/RBDSTransmit•SupportsUSandEuropeandataservice,includingTMC(TrafficMessagingChannel)•RobustOperation•-250Cto+850Coperation•ESDprotectiononallinputandoutputpads_____________________________TypicalApplications__________________________ƒCellPhones/PDAs/SmartPhonesƒPortableAudio&MediaPlayersƒGPSPersonalNavigationDevicesƒAutomotiveandAccessoriesQN8027Rev0.23(03/09)Copyright©2009byQuinticCorporationPage2ConfidentialInformationcontainedhereiniscoveredunderNon-DisclosureAgreement(NDA).AdvanceTechnicalInformation.Thisisaproductunderdevelopment.Characteristicsandspecificationsaresubjecttochangewithoutnotice.CONTENTS1FunctionalBlockDiagram..............................................................................................................................42PinAssignments..............................................................................................................................................53ElectricalSpecifications..................................................................................................................................64FunctionalDescription..................................................................................................................................114.1TransmitMode.......................................................................................................................114.2IdleMode...............................................................................................................................114.3AudioInterface.......................................................................................................................114.4AudioProcessing....................................................................................................................114.5ChannelSetting......................................................................................................................124.6RDS/RBDS.............................................................................................................................125ControlInterfaceProtocol.................................................................................................................